Jim's Outfitters, Inc., makes custom fancy shirts for cowboys. The shirts could be flawed in various ways, including flaws in the weave or color of the fabric, loose buttons or decorations, wrong dimensions, and uneven
The design standard for the product calls for a fill level of 12.00{0.10ounces. The manager collected the follow- ing sample data (in fluid ounces per bottle) on the pro- duction process: OBSERVATION Sample 1234 1 12.00 11.97 12.10 12.08 2 11.91 11.94 12.10 11.96 3 11.89 12.02 11.97 11.99 4 12.10 12.09 12.05 11.95 5 12.08 11.92 12.12 12.05 6 11.94 11.98 12.06 12.08 7 12.09 12.00 12.00 12.03 8 12.01 12.04 11.99 11.95 9 12.00 11.96 11.97 12.03 10 11.92 11.94 12.09 12.00 11 11.91 11.99 12.05 12.10 12 12.01 12.00 12.06 11.97 13 11.98 11.99 12.06 12.03 14 12.02 12.00 12.05 11.95 15 12.00 12.05 12.01 11.97
a. Are the process average and range in statistical control?